Electric radiator



UN TED STATES PATE T. OF ICE.

FREDE'RICK w. QUIDAS, OF MOUNT wAsnNcroN, MARYLAhll), ASSIGNOR OFONE-HALF TO EDWARDA. GRIFFITH, or 'BALTIMonn AnrLs-ND.

ELETRIC -RAoA-ToR. I

. SPECIFICATION forgningpart of Letters Patent No. 606,792', dated J' 5,'1898.

Application filed July 22. 1897.; 'Serial No. 645538 (Ne model.)

Tr rllwhom it may concern.-

Be it known that I, FREDERIGK W. QUIDAS, a cit-izen of the United-States, residing at\ ,Mount Washington, in the County of i Balti- 5more, State of Marylanddave invented a certain new and usefulImprovement in Electric Radiato's, of which the following isa-specification, reference being had to the accompanying drawings.

This improvement is designed to produce an elect'ic radia'tor which willgive' the maximum of heat with the minimum 'of electric energy To. thisend the invention consists in the Construction' hereinafter moreparticularly described, and then definitely claimedat the endhereof.

In the accompan-ying drawings, Figura lis a vertical 'longitudnalsection of a radiatoconstructed according to my iuventioni Eig.

-2 -'is a vertical cross-section of the same. Figs.

'3, 4, 5, 6, 7,-and 8- are vertical cross-sections showing modificationsthereof.

`Referring-now to the details of the `drawas'ingshynumerals, and moreparticularly to Figs land 2; 1 indicates an `ar-tight glass casing'in-which is seoured in any convenient -waya' heating-wire 2, connectedto -terminals 3, passing through', the opposite ende 'of thecasing.,;..At' theback of the'casing'and inclosed the -ein is shown a reflector 4.Partly surrounding the casing is a non-condnctor of hat, such asasbes'tos, but other material 'may be employed. This will form a hacking7,*which I preferably make in the term shown in Figs. 2, '3, 6, and'Leo-that itoverlaps the edges of the inner-casing; but 'I do not limitmyself to this form, as `it may'b'e'varied to suit circumstances, andinstances of such va- As shown in.Figs. 1 and '2, the "gla'ss case sinone piece; but I do notlimitmyself to' that, as it may be made intwopieces, as

-shown in Figs. 3, 4, and 5. I r v ln Fig. 3 the back is fol-med ofcurved 'glass,. and the front is also 'of' curved glass, butof a largercurte. y

In'Figs. 4 and 5 the back of the case. is of 'curved glassand the frontflat; but-in Fig. 4

. trogen.

sothe flat gla'ss -ests on a rabbeted-frame,

;which maybe made of anysuitaple material, g

while in Fig. 5 the rabhet to receive the glass is formed integral with'the hack; The backand front whenmade separately should be Securedtogether with cement of any kind that is notaifected by heat. .If theframe is made separately, that should also be cemented to the back andfront.

I propose sometimes to makethe casingof metal, as in Fig. 6in which caseit should be' coated, as metal, while it readily co'nducts hoat, doesnot allow the heat rays to pass, through as readily as does glass, whichallows of tetrachloridof latinum tobe very good for this purpose, butordinary lanpblack will do.

v -In some cases I intend to silver the baek'of the' glass case, asindicated at 6 in Fig. 7,

thus making it a refiecto'r. In'other cases I may set a. sheet-metalreflector atthe back of *the glass, as 'shown in Fig. 8.

Metal, there- 6 5 I prefer to either form a vacuum in the .l

casing or fill it with an inert gas, such as ni .Inlieuof glassor metalfor the casing I may sometimes use porcelain or similar ma* terial.

Among the advantages of my invention are the following: The minimum ofheat is al)- sorbed at the back, because" the heat usually practicallylost there is reflccted forward in -a horizontal direction, as indicatedin Fig. '2.

,. I have shown 'several formsof my invention,

but do not limit'mys'elf to such, as it is obvious that many differentstyles of heater's and ca'sesmay ibe' employed without departing.

from the spirit of 'my inventioni I am aware thatelectric lights havebeen provided-with reflectors on the outside of the bulbcontaining suchlights, and I am also awu'e that incandescent lights are inelosed in avaenum, and the'efore make no claim to either of these features broadly.

That I claim as new'so 1. Theeombnaton in an eleet-ic heatefi, of aresstance, a casing surrounding the same, a block of poor.heat-conducting materialclosing'the back of the casingnd in contact withit and having a. permen of said material extending 'along the edgesof-the front to hold said casing in the block, sub-` stantially asdescribed.

2. A car-heate' comp'isng a, easing having a pattially-eylindrczlback, aresistan'ce"inclosed in said casing, a reflector in the reat of theresistnce and inside the casiLg, and a block of poor heat-condnetingmaterial in which the'casing is partially embedded leaving its frontnainly exposed, all substantially as desribed and shown.

In tetimony whereof I afix my signature, in the presence of twowitnesses, this 16th day of July; 1897.

FREDERICK \V. QUIDAS.

witnesses:

GEO. MCCAFFRAY, SAAC L. NEWMAN.

